Status of the ENDF project M. Herman, P. Oblozinsky National - PowerPoint PPT Presentation

Status of the ENDF project M. Herman, P. Oblozinsky National Nuclear Data Center, BNL mwherman@bnl.gov Brookhaven Science Associates WPEC Mike Herman Tokai, June 5-6, 2008

ENDF/B-VII.0 library Released December 2006 (16 years after ENDF/B-VI) Major contributors LANL (actinides, light nuclei, thermal neutron scattering) BNL (fission products resonances & fast, decay data) ORNL (resonances) www.nndc.bnl.gov/endf7/ Presentation Mike Herman 2 KAERI, June 2, 2008

Validation 16 contributions to be found at www.nndc.bnl.gov/exfor/4web/benchmarking.html Contributors: R. MacFarlane A. Khaler D. Mosteller C. Huria D. Cullen D.Brown J.Ch. Sublet Results indicate overall improvement compared to ENDF/B-VI.8 WPEC Mike Herman 3 Tokai, June 5-6, 2008

New evaluations CSWEG reestablished the ENDF/A library as repository of updated and new files Current updates can be grouped into: fixes to ENDF/B-VII.0 files with Evaluated Gamma Activation File data new evaluations files with new resonance covariances (MF=32) files with cross section covariances covering the whole energy range (up to 20 MeV). WPEC Mike Herman 4 Tokai, June 5-6, 2008

Contents of ENDF/A 1. n- 001_H_003 .RC-fix 2. n- 011_Na_022 .res-tot-width 3. n- 037_Rb_087 .RC-fix 4. n- 040_Zr_90 t2.bnl 5. n- 048_Cd_113 .bnl 6. n- 094_Pu_241 .za-fixed 7. n- 095_Am_241 .za-fixed 8. n- 17_Cl_35 .ornl 9. n- 17_Cl_37 _Y8D_070307.ornl 10. n- 182_W +EGAF.llnl 13. n- 186_W +EGAF.llnl 11. n- 183_W +EGAF.llnl 14. n- 19_F +EGAF.llnl 12. n- 184_W +EGAF.llnl 15. n- 237_U _11.12.2007.llnl 16. n- Am_240 -new.llnl 17. n- Mn_055 -newRR.ornl 18. n- Mo_97 .lanl-fix 19. n- Pu_239 -newMF33.ornl-lanl-prelim 20. n- U_233 -newMF33.ornl-lanl-prelim 21. n- U_235 -newMF33.ornl-lanl-prelim 22. n- U_238 -newMF33.ornl-lanl-prelim 23. n- Zr_96 .lanl-fix WPEC Mike Herman 5 Tokai, June 5-6, 2008

Covariances Major improvements expected in the next release Recent activities evaluations of MF=32 and 33 by ORNL and LANL ‘low-fidelity’ covariance project including a full set of VII.0 materials is under completion (BNL, ORNL and LANL) advances in processing covariances (PUFF-IV.1.0.4 and NJOY-99.259) Workshop on Neutron Cross section Covariances (60 participants, >40 contributions) WPEC Mike Herman 6 Tokai, June 5-6, 2008

Sigma: Web retrieval & plotting for ENDF/B-VII Transparent and easy to use, www.nndc.bnl.gov/sigma Sigma-2, April 2008, new features  Angular distributions of neutrons (MF4)  Spectra of neutrons and photons (MF5)  Mathematical operations (MF3) Coming soon  Energy-angle distributions (MF6)  Covariances (MF33) Presentation Mike Herman 7 KAERI, June 2, 2008

Sigma: Web retrieval & plotting for ENDF/B-VII Transparent and easy to use, www.nndc.bnl.gov/sigma Sigma-2, April 2008, new features  Angular distributions of neutrons (MF4)  Spectra of neutrons and photons (MF5)  Mathematical operations (MF3) Coming soon  Energy-angle distributions (MF6)  Covariances (MF33) Presentation Mike Herman 7 KAERI, June 2, 2008

Sigma: Web retrieval & plotting for ENDF/B-VII Transparent and easy to use, www.nndc.bnl.gov/sigma Sigma-2, April 2008, new features  Angular distributions of neutrons (MF4)  Spectra of neutrons and photons (MF5)  Mathematical operations (MF3) Coming soon  Energy-angle distributions (MF6)  Covariances (MF33) Presentation Mike Herman 7 KAERI, June 2, 2008

ENDF-6 manual Problems with the current version • MS Word – Poor quality – Lack of modern features (structuring, hyperlinks, automatic indexing and referencing) – Difficult to handle • Conversion to pdf takes 1.5 hours • Printing about 3 hours • Recent format updates not included • Some changes lost in 2005 Solution: go back to LaTeX! Presentation Mike Herman 8 KAERI, June 2, 2008

New ENDF-6 manual Presentation Mike Herman 9 KAERI, June 2, 2008

Status of ENDF checking codes FIZCON-7.05 CHECKR-7.04 Only errors reported in output Only errors reported in output Increased dimensions for workspace Warning subroutine introduced and number of gamma rays ’MT allowed in derived files' ’LB=8 section missing' not considered classified as a warning rather an error than an error Can be compiled with GNU g95 Can be compiled with GNU g95 STANEF-7.02 PSYCHE-7.03 Several dimensions increased Can be compiled with GNU g95 Extended MF=32 processing Can be compiled with GNU g95 Presentation Mike Herman 10 KAERI, June 2, 2008

ENDF/B-VII.0 in ACE Format Name: ENDF/B-VII.0-ACE ID: D00226MNYCP00 Contents: Neutron Reaction Sublibrary  (392 materials, 300 o K) Neutron Thermal Scattering  Sublibrary (20 materials, one temperature for each material) Request through: rsicc.ornl.gov/rsiccnew/CFDOCS/ENDFrequest_form1.cfm Presentation Mike Herman 11 KAERI, June 2, 2008